/* CSS Variables - Design System */
/* Optimized for Performance */
:root {
    --color-primary: #18ddc3c9;
    --color-primary-hover: #00e5c4;
    --color-primary-light: rgba(0, 245, 212, 0.162);
    --color-primary-glow: rgba(0, 245, 212, 0.4);
    
    --color-secondary: #7b2cbf;
    --color-secondary-hover: #9d4edd;
    --color-secondary-light: rgba(123, 44, 191, 0.2);
    
    --color-accent: #e0aaff;
    --color-accent-alt: #c77dff;
    --color-success: #00f5d4;
    --color-warning: #ffd60a;
    --color-danger: #ff006e;
    --color-info: #4cc9f0;

    --color-highlight: #f0c36d;
    /* --bg-card:#151c26 */
    
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #15151f;
    --bg-elevated: #1e1e2a;
    --bg-hover: rgba(255, 255, 255, 0.03);
    --bg-active: rgba(0, 245, 212, 0.1);
    
    --gradient-primary: linear-gradient(135deg, #00f5d4 0%, #7b2cbf 100%);
    --gradient-secondary: linear-gradient(135deg, #4361ee 0%, #7209b7 100%);
    
    --text-primary: #ffffff;
    --text-secondary: #b4b4c4;
    --text-muted: #e9e9e9ea;
    --text-accent: #00f5d4;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(0, 245, 212, 0.3);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 245, 212, 0.25);
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
    --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', 'Monaco', 'Andale Mono', monospace;
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-hover);
}

::selection {
    background: var(--color-primary-light);
    color: var(--text-primary);
}

/* ============================================
   Header - Optimized
   ============================================ */
.header {
    background: rgba(18, 18, 26, 0.98);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    contain: layout style;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.4;
    pointer-events: none;
}

.header-content {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 42px;
    height: 42px;
    filter: drop-shadow(0 0 8px rgba(0, 245, 212, 0.3));
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-title {
    font-size: 1.35rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-alt) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.02em;
}

.trust-tags {
    display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap;
}
.trust-tag {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 20px;
    background: rgba(0,245,212,.08); border: 1px solid rgba(0,245,212,.18);
    color: #00f5d4; font-size: 0.65rem; font-weight: 500;
    cursor: default; position: relative; letter-spacing: 0.3px;
}
.trust-tag svg { flex-shrink: 0; opacity: .8; }
.trust-tag:hover { background: rgba(0,245,212,.14); border-color: rgba(0,245,212,.3); }
.trust-tag::after {
    content: attr(data-tip);
    position: absolute; bottom: calc(100% + 8px); left: 50%;
    transform: translateX(-50%); white-space: nowrap;
    padding: 6px 14px; border-radius: 8px;
    background: #1a1d28; border: 1px solid rgba(0,245,212,.2);
    color: #c8cdd4; font-size: 0.78rem; font-weight: 400;
    opacity: 0; pointer-events: none;
    transition: opacity .2s; z-index: 100;
    box-shadow: 0 4px 16px rgba(0,0,0,.3);
}
.trust-tag:hover::after { opacity: 1; }

/* Navigation - Neon Theme */
.nav-links {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-weight: 500;
    font-size: 0.8rem;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(0, 245, 212, 0.08);
    box-shadow: 0 0 15px rgba(0, 245, 212, 0.15);
}

.nav-link:active {
    transform: scale(0.97);
}

.nav-icon {
    width: 18px;
    height: 18px;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.container {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    height: calc(100vh - 140px);
}

/* ============================================
   Preset Bar - Optimized
   ============================================ */
.preset-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    position: relative;
    contain: layout style;
}

.preset-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.3;
    pointer-events: none;
}

.preset-label {
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    font-size: 0.875rem;
}

.preset-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.preset-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.8rem;
    position: relative;
}

.preset-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-color-hover);
}

.preset-btn.active {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    border-color: transparent;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
}

.preset-btn.preset-special {
    background: rgba(123, 44, 191, 0.15);
    border-color: rgba(123, 44, 191, 0.3);
    color: var(--color-accent);
}

.preset-btn.preset-special:hover {
    background: rgba(123, 44, 191, 0.25);
    border-color: var(--color-secondary);
    color: var(--text-primary);
}

.preset-btn.preset-special.active {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent-alt) 100%);
    border-color: transparent;
    color: var(--text-primary);
}

.preset-btn.preset-ultimate {
    background: rgba(255, 0, 110, 0.15);
    border-color: rgba(255, 0, 110, 0.3);
    color: #ff9ecd;
    font-weight: 600;
}

.preset-btn.preset-ultimate:hover {
    background: rgba(255, 0, 110, 0.25);
    border-color: var(--color-danger);
    color: var(--text-primary);
}

.preset-btn.preset-ultimate.active {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-warning) 100%);
    border-color: transparent;
    color: var(--bg-primary);
}

/* Search Box */
.search-box {
    flex: 1;
    max-width: 280px;
    margin-left: auto;
    position: relative;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.8rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.search-input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   Workspace - Optimized Layout
   ============================================ */
.workspace {
    display: grid;
    grid-template-columns: 1fr 400px 1fr;
    gap: var(--spacing-sm);
    flex: 1;
    min-height: 0;
}

/* ============================================
   Panel - Optimized
   ============================================ */
.panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    contain: layout style;
}

.panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.2;
    pointer-events: none;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: rgba(26, 26, 37, 0.5);
    flex-shrink: 0;
}

.panel-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.panel-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 500;
}

.action-btn svg {
    width: 14px;
    height: 14px;
}

.action-btn:hover {
    background: var(--bg-hover);
    color: var(--color-primary);
    border-color: var(--border-color-hover);
}

/* ============================================
   Editor Wrapper
   ============================================ */
.editor-wrapper {
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* 隐藏原始 textarea，防止页面加载时闪烁 */
.editor-wrapper > textarea {
    display: none;
}

/* CodeMirror Customization */
.CodeMirror {
    height: 100% !important;
    font-family: var(--font-mono);
    font-size: 13px;
    background: transparent !important;
}

.CodeMirror-gutters {
    background: rgba(26, 26, 37, 0.3) !important;
    border-right: 1px solid var(--border-color) !important;
}

.CodeMirror-linenumber {
    color: var(--text-muted) !important;
}

.CodeMirror-activeline-background {
    background: var(--bg-hover) !important;
}

.CodeMirror-selected {
    background: var(--color-primary-light) !important;
}

.CodeMirror-cursor {
    border-left-color: var(--color-primary) !important;
}

/* ============================================
   Options Panel - Compact
   ============================================ */
.options-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

/* Option Category - Compact */
.option-category {
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: rgba(21, 21, 31, 0.4);
}

.option-category:hover {
    border-color: rgba(0, 245, 212, 0.2);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    background: rgba(26, 26, 37, 0.6);
    cursor: pointer;
    user-select: none;
}

.category-header:hover {
    background: rgba(0, 245, 212, 0.05);
}

.category-title {
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.category-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.option-category.collapsed .category-icon {
    transform: rotate(-90deg);
}

.category-content {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: transparent;
}

.option-category.collapsed .category-content {
    display: none;
}

/* Option Item - Compact */
.option-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    flex-wrap: wrap;
    overflow: visible;
}

.option-item:hover {
    background: var(--bg-hover);
}

.option-item.hidden {
    display: none;
}

.option-checkbox {
    margin-top: 0;
    flex-shrink: 0;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    flex-shrink: 0;
    min-width: 0;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
    border-radius: 4px;
    flex-shrink: 0;
}

.option-label {
    font-size: 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    white-space: nowrap;
}

.option-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(0, 245, 212, 0.1);
    color: var(--color-primary);
    font-size: 0.6rem;
    font-weight: 700;
    cursor: help;
    flex-shrink: 0;
}

.global-tooltip {
    position: fixed;
    padding: 8px 14px;
    background: #1e2235;
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 8px;
    color: #c8cdd4;
    font-size: 0.78rem;
    line-height: 1.6;
    max-width: 260px;
    z-index: 99999;
    pointer-events: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease;
    word-break: break-word;
}

.global-tooltip-arrow {
    position: fixed;
    width: 0;
    height: 0;
    z-index: 99999;
    pointer-events: none;
    display: none;
}

/* Option Input - Inline */
.option-input {
    flex: 1;
    min-width: 60px;
    padding: 3px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.option-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.option-input-small {
    width: 65px;
    text-align: center;
    flex-shrink: 0;
}

/* Select - Inline */
.option-select {
    padding: 3px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
    flex-shrink: 0;
    max-width: 160px;
}

.option-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Range Input - Inline */
.range-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    flex-shrink: 0;
}

.option-range {
    flex: 1;
    min-width: 80px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 3px;
    cursor: pointer;
    border: 1px solid rgba(0, 245, 212, 0.15);
}

.option-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-primary-glow), 0 2px 4px rgba(0,0,0,0.3);
    border: 2px solid var(--bg-card);
    margin-top: -6px;
}

.option-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-primary-glow), 0 2px 4px rgba(0,0,0,0.3);
    border: 2px solid var(--bg-card);
}

.range-value {
    min-width: 38px;
    text-align: right;
    font-size: 0.7rem;
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-weight: 500;
}

/* Array Input - Inline */
.array-input-wrapper {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
    max-width: calc(100% - 80px);
}

.array-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 3px var(--spacing-sm);
    background: var(--color-primary-light);
    border: 1px solid rgba(0, 245, 212, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    color: var(--color-primary);
}

.array-tag-remove {
    cursor: pointer;
    opacity: 0.7;
    font-size: 1rem;
    line-height: 1;
}

.array-tag-remove:hover {
    opacity: 1;
    color: var(--color-danger);
}

.array-input {
    flex: 1;
    min-width: 100px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.75rem;
}

.array-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ============================================
   Stats Bar
   ============================================ */
.stats-bar {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(26, 26, 37, 0.5);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    font-family: var(--font-mono);
}

/* ============================================
   Action Bar - Optimized
   ============================================ */
.action-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    position: relative;
    contain: layout style;
}

.action-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.3;
    pointer-events: none;
}

.obfuscate-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--bg-primary);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.obfuscate-btn svg {
    width: 20px;
    height: 20px;
}

.obfuscate-btn:hover {
    box-shadow: var(--shadow-glow);
}

.obfuscate-btn:active {
    transform: scale(0.98);
}

.obfuscate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Progress */
.progress-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    max-width: 400px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0%;
}

.progress-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    font-weight: 500;
}

/* ============================================
   Footer - Optimized
   ============================================ */
.footer {
    padding: 16px var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(30, 41, 59, 0.5);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: #64748b;
}

.footer-row a {
    color: #64748b;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-row a:hover {
    color: #00d4d4;
}

.footer-dot {
    color: rgba(255,255,255,.18);
    margin: 0 4px;
}

.footer-pipe {
    color: rgba(255,255,255,.18);
    margin: 0 4px;
}

.footer-bottom {
    text-align: center;
    color: #64748b;
    font-size: 0.75rem;
    margin-top: 10px;
}

@media (max-width: 600px) {
    .footer-row {
        gap: 4px;
        text-align: center;
    }
}

/* ============================================
   Modal - Smooth Animation
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease-out, visibility 0.2s ease-out;
}

.modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.85);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), var(--shadow-glow);
    transform: scale(0.92) translateY(16px);
    opacity: 0;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease-out;
    will-change: transform, opacity;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    background: rgba(26, 26, 37, 0.5);
}

.modal-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--color-primary);
    border-color: var(--border-color-hover);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-body {
    padding: var(--spacing-lg) var(--spacing-xl);
    overflow-y: auto;
    max-height: calc(85vh - 80px);
}

/* Feature Section */
.feature-section {
    margin-bottom: var(--spacing-xl);
}

.feature-section:last-child {
    margin-bottom: 0;
}

.feature-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.feature-badge-original {
    background: rgba(0, 245, 212, 0.15);
    color: var(--color-primary);
    border: 1px solid rgba(0, 245, 212, 0.3);
}

.feature-badge-extended {
    background: rgba(123, 44, 191, 0.2);
    color: var(--color-accent);
    border: 1px solid rgba(123, 44, 191, 0.4);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.feature-item:hover {
    border-color: var(--border-color-hover);
    background: var(--bg-hover);
}

.feature-item-highlight {
    border-color: rgba(123, 44, 191, 0.3);
    background: rgba(123, 44, 191, 0.05);
}

.feature-item-highlight:hover {
    border-color: rgba(123, 44, 191, 0.5);
    background: rgba(123, 44, 191, 0.1);
}

.feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
}

.feature-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.feature-item-highlight .feature-icon {
    background: rgba(123, 44, 191, 0.2);
}

.feature-item-highlight .feature-icon svg {
    color: var(--color-accent);
}

.feature-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.feature-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* About Section */
.about-section {
    margin-bottom: var(--spacing-lg);
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.about-logo-icon {
    width: 56px;
    height: 56px;
    filter: drop-shadow(0 0 10px rgba(0, 245, 212, 0.3));
}

.about-logo-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-alt) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.about-logo-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

.about-section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.about-section-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.about-text strong {
    color: var(--color-primary);
}

.about-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.about-list li svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    margin-top: 2px;
}

.about-list li strong {
    color: var(--text-primary);
}

.about-notice {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: var(--radius-md);
}

.about-notice > svg {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.about-notice p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.about-notice p + p {
    margin-top: var(--spacing-xs);
}

.about-notice strong {
    color: var(--color-primary);
}

.about-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.about-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.about-link:hover {
    background: var(--bg-hover);
    border-color: var(--border-color-hover);
    color: var(--color-primary);
}

.about-link svg {
    width: 16px;
    height: 16px;
}

/* Modal Responsive */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .about-links {
        flex-direction: column;
    }
    
    .about-link {
        justify-content: center;
    }
}

/* ============================================
   Toast - Optimized (顶部居中显示)
   ============================================ */
.toast {
    position: fixed;
    top: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-toast);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--color-primary);
    background: rgba(0, 245, 212, 0.1);
}

.toast.error {
    border-color: var(--color-danger);
    background: rgba(255, 0, 110, 0.1);
}

.toast.warning {
    border-color: var(--color-warning);
    background: rgba(255, 214, 10, 0.1);
}

/* ============================================
   Drag & Drop Overlay
   ============================================ */
.drag-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 245, 212, 0.05);
    border: 3px dashed var(--color-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    pointer-events: none;
}

.drag-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.drag-overlay-content {
    text-align: center;
    color: var(--text-primary);
}

.drag-overlay-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1400px) {
    .workspace {
        grid-template-columns: 1fr 340px 1fr;
    }
}

@media (max-width: 1200px) {
    .workspace {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .options-panel {
        grid-column: 1 / -1;
        grid-row: 1;
        max-height: 300px;
    }
    
    .input-panel {
        grid-column: 1;
        grid-row: 2;
    }
    
    .output-panel {
        grid-column: 2;
        grid-row: 2;
    }
}

@media (max-width: 900px) {
    .workspace {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr 1fr;
    }
    
    .options-panel {
        grid-column: 1;
        grid-row: 1;
    }
    
    .input-panel {
        grid-column: 1;
        grid-row: 2;
    }
    
    .output-panel {
        grid-column: 1;
        grid-row: 3;
    }
    
    .preset-bar {
        flex-wrap: wrap;
    }
    
    .search-box {
        width: 100%;
        max-width: none;
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 600px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
    }
    
    .preset-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .container {
        height: auto;
        min-height: calc(100vh - 200px);
    }
    
    .workspace {
        min-height: 600px;
    }
    
    .panel {
        min-height: 200px;
    }
    
    .stats-bar {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
}

/* ============================================
   Additional Styles
   ============================================ */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Option Group Styling */
.option-group {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
    border-left: 2px solid var(--border-color);
}

.option-description {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Highlight on search */
.option-item.highlight {
    background: var(--color-primary-light);
    border-radius: var(--radius-sm);
}

/* Disabled state */
.option-item.disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* Multi-select tags - Inline */
.multi-select-wrapper {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-left: 8px;
}

.multi-select-tag {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.multi-select-tag:hover {
    border-color: var(--border-color-hover);
    color: var(--text-primary);
}

.multi-select-tag.selected {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Loading state */
.loading {
    opacity: 0.6;
}

/* Drag over state */
.drag-over {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 20px var(--color-primary-glow) !important;
}

/* ============================================
   Token 令牌样式
   ============================================ */
.token-status {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 12px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.token-status.none { background: var(--bg-tertiary); color: var(--text-muted); border: 1px solid var(--border-color); }
.token-status.valid { background: rgba(0, 245, 212, 0.1); color: var(--color-primary); border: 1px solid var(--color-primary); }
.token-status.expired { background: rgba(255, 0, 110, 0.1); color: var(--color-danger); border: 1px solid var(--color-danger); }
.token-dot {
    width: 6px; height: 6px; border-radius: 50%; background: currentColor;
    animation: tokenPulse 2s infinite;
}
@keyframes tokenPulse { 0%,100%{opacity:1} 50%{opacity:.3} }